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Alyssum spinosum | Spiny Madwort

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DESCRIPTION
Alyssum spinosum produces masses of tiny, four-petaled white to soft pink flowers in mid to late spring, covering the branches and attracting bees and other early pollinators. Small, narrow gray-green leaves are softly hairy and closely spaced along rigid, thorny stems, forming a dense, finely textured mound that remains attractive throughout the year. The intricate branching creates a naturally sculptural framework, while the profusion of blooms softens the plant's spiny character during the flowering season.

Native to the rocky hillsides of the Mediterranean region, this species is well adapted to rugged landscapes and exposed sites. It is well suited to rock gardens, gravel plantings, retaining walls, and Mediterranean-style borders, where its evergreen foliage, intricate branching, and spring flowers provide year-round texture and seasonal interest.

DESCRIPTION
Alyssum spinosum produces masses of tiny, four-petaled white to soft pink flowers in mid to late spring, covering the branches and attracting bees and other early pollinators. Small, narrow gray-green leaves are softly hairy and closely spaced along rigid, thorny stems, forming a dense, finely textured mound that remains attractive throughout the year. The intricate branching creates a naturally sculptural framework, while the profusion of blooms softens the plant's spiny character during the flowering season.

Native to the rocky hillsides of the Mediterranean region, this species is well adapted to rugged landscapes and exposed sites. It is well suited to rock gardens, gravel plantings, retaining walls, and Mediterranean-style borders, where its evergreen foliage, intricate branching, and spring flowers provide year-round texture and seasonal interest.

  • Family: Brassicaceae
    Height: 8 in to 12 in
    Width: 18 in to 24 in
    Foliage color: Gray green narrow leaves on thorny branching stems
    Flower color: White to pale pink four petaled flowers
    Bloom time: Mid to late spring
    Light requirements: Full sun
    Water requirements: Low
    Maintenance: Low; prune lightly after flowering to maintain a compact shape
    Growing zone: USDA zones 5 to 9
    Wildlife attractors: Bees, butterflies and other pollinators attracted to the nectar rich flowers

    This plant can be seen at the Bellevue Botanical Garden.

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  • Works Well In:
    ‍ ‍ ● Coastal Gardens
    ‍ ‍ ● Borders
    ‍ ‍ ● Pollinator Gardens
    ‍ ‍ ● Rock Gardens

    Companion Plants:
    ‍ ‍ Lavender Helianthemum
    ‍ ‍ Santolina Thyme
    Sedums Euphorbias

    Design Tip:
    Position among rocks, gravel, or retaining walls where its compact evergreen form softens hard edges without concealing stonework.

    Repeat throughout dry plantings to establish rhythm, reinforce Mediterranean character, and provide year-round texture within drought-tolerant landscapes.